Locomotive or car truck



Feb. 2 1926. 1,571,725 0. K. KJOLSETH LOCOMOTIVE OR GAR TRUCK Filed Sept. 5 1924 @"Tmmmw I lllllll M m lnventom:

Ole K.K jolseth y His Attorney Patented Feb. 2, 1926. v

UhllTED STATES rareur orrice.

OLE K. I I J'OLSETI-I, OF SGOTIA, NEW YORK, ASSIGNOR T0 GENERAL ELECTRIC COM PAITY, A CQBEORATIQN 01? NEW YORK.

LOCOMU'IIVE on, can race-K.

Application filed September 5, 1924. Serial l Io. 736,150.

To all whom it may concern Be it known that I, OLE K..KJoLsnT1-I, a citizen of the United States, residing at Scotia, in the county of Schenectady, State of New York, have invented certain new and useful Improvements in Locomotives or Car Trucks, of which the following is a specification.

My invention relates to locomotive or car trucks and particularly to trucks for electrically propelled locomotives or cars.

It has heretofore been proposed to use the electric motors of such trucks as part of the mechanical portion of the truck, supporting the motors between the axles of the truck and a transom, the transom being supported on equalizers which in turn are supported on the frames of the motors. It is advantageous to use leaf springs in locomotive and car trucks since such springs are capable of deflecting more than coil springs in the limited space available on a truck and present more friction to deflection and thereby tend to dampen out oscillations. Trucks heretofore constructed as pointed out above, do not readily lend themselves to the use of leaf springs however. My invention has for its object a novel, simple and cheap construction of a truck of the above described type in which leaf springs may be readily employed. 1

For a better understanding of my invention, reference may be made to the following description taken in connection with the accompanying drawing, in which Fig. 1 1s a plan view of a truck embodying my invention; Fig. 2 is an elevation of the truck of Fig. 1 with parts broken away and 1n section; and Fig. 3 is'a sectional v1ew taken on the line 3-3 of Fig. 1.

Referring to the drawing, the axles 1 are provided with the usual wheels 2 and are arranged to be driven by electric motors 3. Each of the motors, of which there are a pair, is supported between one of the axles 1 and a transom 4. Each of the axles has a bearing 5 in the frame of its respective motor; and each of the motors is geared to its respective axle through gearing contained within gear case 6. Equalizers 7 are connected to the frames of the motor 3 so as to permit slight rotary motion between the motors and the equalizers. The transom 4 is supported by meansof springs 8 on the equalizers. These springs are preferably leaf springs, because such springs are more flexible than coil springs and the friction between the leaves of such a spring tend to dampen out oscillations. .The equalizers are preferably hollowed out in their middle portion, and the springs 8 are placed in this hollowed-out part, resting on seats 9 provided therefor. By placing the springs within. the equalizers in such hollowed-out portions, the he ght of the truck is materially reduced. The transom has extending portions 10 engaging the middle of the top of the springs 8.

Each motor has a nose 11 somewhat similar to the ordinary nose on a railway motor which fits into a recess in the transom 4, so as to prevent up and down or side-wise movement of the motor with respect to the transom. Part of the weight of each motor is thus carried by the transom. The rest of the weight of each motor is carried on the respective axle by means of the bearings 5, which act as the main journals of the truck.

The proper distance between the two axles is maintained by this pair of equalizers 7 which are pivotally connected to the frames of the motors by pins 12. This construction prevents any longitudinal motion between the equalizers and the motors.

The outside ends 13 form a support for the brake rigging. the brake levers 14 being pivotally connected to the ends 13 of the transom and in line with the wheels. The transom has a cavity 15 in which the usual center plate is mounted. It will thus be seen that all of the weight on the center plate together with the weight of the tran som and the portion of the weight of the motors carried by the transom is spring born by the equalizers.

Such a truck will be light in weight and inexpensive to build, and does not require any outside journal boxes or outside frame.

I desire it to be understood that my invention is not limited. to the particular construction shown and described, and aim in the appended claims to cover all modifications which do not depart from the spirit and scope of my invention.

What I claim as new and desire to secure by Letters Patent of the United States is 1. A locomotive or car truck comprising wheels, axles therefor, a truck transom, electric motors geared to said axles, each of said axles having a bearing in the frame of its respective motor, each of said motors being also supported on said transom, equalizers having their ends pivoted to the frames of said motors, and spring supports for said transom on said equalizers. r

2. A locomotive or cartruck comprising wheels, axles therefor, a truck transom, electric motors geared to said axles, each of said axles having a bearing in the frame of its respective motor, each of said motors be ing also supported on said transom, equalizers supported from said motors by pivotal connections therewith, and leaf springs mounted on said equalizers, said transom being supported on said springs.

3. A locomotive or car truck comprising Wheels, axles therefor, a truck transom, electric motors geared to said axles, each of said axles having a bearing in the frame of'its respective motor, each of said motors being also supported on said transom, equalizers, connections between said equalizers and the frames of said motors permitting slight rotary motion between said motors and said equalizers, said equalizers having a hollowed-out portion, and leaf springsmounted in said hollowed-out portion of said equalizers, said transom being supported on said springs.

4:. A locomotive or car truck comprising wheels, a pair of axles therefor, a truck transom, a pair of electric motors, each motor being geared to its respective axle, each of said axles having a bearing in the frame of its respective motor, each of said motors being also supported on said transom, a pair of longitudinally extending equalizers, said equalizers being non-yieldingly supported from the frames of said motors, and spring supports for said transom on said equalizers.

A locomotive or car truck comprising Wheels, a pair of axles therefor, a truck transom, a pair of electric motors, each motor be ing geared to its respective axle, each of said axles having a bearing in the frame of its respective motor, each of said motors being also supported on said transom, a pair of longitudinally extending equalizers, said equalizers being supported by pivotal connections to the frames of said motors, and lea-f springs mounted on said equalizers, said transom being supported on said springs.

6. A locomotive or car truck comprising Wheels a pair of axles therefor, a truck transom, a pair of electric motors, each motor.

being geared to its respective axle, each of said axles having a bearing in the frameof its respective motor, each of said motors being also supported on said transom, a pair of longitudinally extending equalizers,

said equalizers being pivotally connected to the frames of said motors and having a hollowed-out portion, and leaf springs mounted in said hollowed-out portion of said equalizers, said transom being supported on said springs.

In Witness whereof I have hereunto set my hand this ithday of September, 1924;.

OLE K. KJOLSETH. 

